Microsoft is holding a big event at its headquarters in Redmond,
Wash., Wednesday to
show off Windows 10 and provide a deeper look beyond the tiny
preview we got last fall.

Windows 10 is designed to fix a lot of the gripes people had with
Windows 8. Instead of focusing mostly on tablet-optimized apps,
Windows 10 will work better with traditional desktop and laptop
computers, which should be more familiar for most users.

Windows 10 will be the operating system for all Microsoft
devices, including Windows Phones and Xbox. Microsoft promises
that creating one unified OS will make it easier for developers
to write apps for multiple platforms at once. In theory, this
should solve Windows Phone's app selection problem. It still
doesn't have the best apps like Android and the iPhone.

The final version of Windows 10 probably won't be ready until
much later this year. But Microsoft typically lets users try
early builds of Windows for free in a consumer preview version,
which Foley says will arrive in February and work on certain
Windows Phones, PCs, and tablets.